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6-x+12 = 10x+7 6+12-7 = 10x+x 11 = 11x x = 1
You have : -------------- ( x + 1 ) / ( x ) = ( -7 ) / ( x - 12 ) Multiply both sides by ( x ) ( x - 12 ) and get : ( x + 1 ) ( x - 12 ) = ( -7 ) ( x ) x^2 - 12x + x - 12 = -7x x^2 - 4x - 12 = 0 Factor the above : ( x - 6 ) ( x + 2 ) = 0 There are two roots : x = 6 <------------------ x = -2 <---------------
12/7 or 1 and 5/7
7 + 5 6 + 6 3 x 4 2 x 6
-6 X -2 (-1)6X(-1)2 (-1)(-1)12 12